Work holder for



E. K. VAN BUSKIRK. worm HOLDER Foa ENDLEss coNvEYEas.

4 APPLICATION FILED APR. I9. 1920.

Patented May 30,1922;

3 SHEETS-SHEET lr L U Ei KU,

K E.`K. VAN BUSKIRK.

woBK HOLDER Fon ENDLEs's coNvEYfs.

APPLICATION FILED APR. 19.11920.

Patented May 30, 1922.

3 SHEETS-SHEET 2.

ELC-F."

l ad E. K. VAN BUSKIRK.-

WORK HOLDER FOR ENDLESS CONVEYERS.

`A.PPLICAT|0N FILED AFR. 19 1920.

Patented May 30, 1922.

3 SHEETS-SHEET. 3.

cargar carica.

nivivnsr` K. VAN BUsK1nKoF 3mal-rammen, YORK, Assrenon or cria-HALF ro HAROLD ivan HAnais, or B InGHAi/rron, NEW YORK.

weak` I -ronpnn non niinrfnss convnrnns.

Speci'ication of Letters Patent.

Patented May 30,1922.

Applicatign filed April 19, 11920. Serial No. 375,099.

To all 'whom t may concern.'

Be it known that I, ERNEST K. VAN Bos- Kmi, a'citizen of the United States, residingat Binghamton, in ther county of Broome and State of New York, have invented eeny tain new and useful Improvements in Vork Holders for Endless Conveyers; and l do declare the following tobe a full, clear, `and lexact description of the invention, such as will en able others skilled in. the art to which it appertains to make and use the same.

The invention relates to work holders, and more specifically to an improved work holder for an endless conveyer, chain-conveyer or other flexible conveyer ofthis character.

The inai'n object of this invention is to provide an improved"conveyer-lug or chuck having an inclined work-seat and a workengaging element or retaining-jaw having a work-engaging seat orsurfacecparallel with said work-seat, so that a bar having parallel surfaces can be snugly fittedk between this Seat and the retaining jaw and held thereby while being conveyed horizontally into engagement with a machine-tool to operate on a corner of this bar.

A further object is to provide. an irnproved and simple means whereby this chuck can be'angularly adjusted so as to change the degree of inclination of the work-seat and retainer.

A' further object is to provide a workholder or chuck of this character which is adjustable for conforming to work of different dimensions.

@ther objects andI advantages will be pointed out or implied-'inthe following details of description, in connection with the accompanying drawings in which Fig. 1 is a side elevation of'a portion of a conveyer and certain associated parts of a tenoni-ng 'machine, this conveyer being provided with my improved work-holding device, the work beingillustrated in dotted lines.'`

Fig. 2 is a top plan viewof the conveyer illustrated in Fig. 1, a portion ofthe conveyer shaft beingy broken out.

Fig. 3 is an enlarged. front end elevation of my improved work-holding device.

Fig. 4 is asectional view, the section being taken along the line 4 4. of Fig. 3.

Fig. 5 is a horizontal sectional view, the sectionbeing taken along the line 55 of F igg.

Fig.,6'- is a vertical sectional view along thev line 6-.6 of 4.

Figf is a perspective view showing the sliding or telescopic connection of the jaws with the base or base-plate.

.Fig- 8 is a vertical sectional view of a modified form of the invention, the` section being taken substantially along the line 8-.8 of Fig. 9.

Fig. 9` is a vertical sectional view, the section being taken substantially along the line 9.-.9 of Fig. 8.

Fig. 1'() is a perspective view illustrating the twoy main elements of this modified form lseparated from one another.

`Referring to these drawings in detail, in which similar reference characters correspond with similar parts throughout the several parts, and in which the sprockets or driving wheels 1, driving shaft 2, guide-beam 3., and holding-downl device le are. of ordinary construction, the invention yconsists in the constructionv and arrangement of parts which will now .be described as follows:

According to the form illustrated in Figs. 1.- to 7, inclusive, the device comprises a link 5, a base-plate 6, a lower jaw or work-piece 7, an upper jaw or work-holding element 8 and other minor elements such as screws 9 and 10.

The hase-.plate 6 is provided with a laterally extending rib or ridge whose lateral edges constitute shoulders or abutments 1,1, and the link 5is provided with a corresponding pair of shoulders between Which the shoulders 11 are seated, and against which they are fitted. The base-plateis. provided with an aperture therethrough, indicated at 12 in Fig- 7, and the screwv 9 extends therethrough into engagement with .the link 5. It willt be seen, therefore, that each shoulder 11 cooperates with the screw 9 for securing the base-plate 6 on the outer surface of the link 5.A

A hollow stud or socket 13 extends outward from the outer major surface of the base-plate 6, and the aw 8 is provided with a shank 14 which is slidingly fitted in the socket 13. rThe shank 14 and hollow of the socket 13 are preferably of dove-tail construction, in cross section,I as shown in Fig.

' .major surfaces of the base-plate.

The base-plate 6 is provided with a groove 15 which extends longitudinally or in the direction of travel of this plate, and the jaw 7 is provided with a corresponding tongue 16, this tongue and groove being preferably of dove-tail construction, as shown, and the tongue 16 is slidable longitudinally inthe 'groove 15 to provide adjustment tof ward and from the jaw 8. A screw 17 is provided to bear against the tongue 16 and hold the jaw 7 in its different adjustments. It will be seen, therefore, that a bar having y parallel opposite sides, as indicated at W in Fig. 4', can be snugly fitted between the workengaging surfaces of the jaws 7 and 8, and held 'by these jaws in a laterally inclined position so that a saw or dado-head of a woodworking machine (for instance) can cut a kerf or dado at a'prevdetermined angle to the major sides of the bar or work WV; 1t is to be understood, of course, that two of the devices are employed, that is, two of the `work-holders such as shown in Fig. 4, one

on each of two parallel chains, as shown in Fig. 2. By adjusting the jaws 7 and 8, or one of them, bars or pieces of work of various thicknesses can be placed therebetween.

In the form illustrated in Figs. 8, 9 and 10, the link 5 and its connection with the base-plate is substantially the same as that previously described, that is, the base-plate is provided with shoulders 1l, and an aperture 12 which receives the securing screws 9. However, the upper major surface of this base-plate 6L is arcuate or concaved, and its dove-tail groove 15ZL extends from front to rear, throughout its entire length, and is-v arcuate in conformance with the degree of curvature of its adjuncts. The upper edges of this groove are disposed in parallel planes which are at right angles to the maj or sides of the base plate 6e, and the dove-tail rib16'n1 is formed on a work-engaging member which is formed of a single piece and includes upper and lower jaws 7L and 8a. These jaws are of the same general construc-y tion and for the same purpose as the jaws 7 and 8 previously described, and their workengaging surfaces are oblique to the inner major surface which is seated upon the link 5. However, these jaws 7a and 8a, instead of being adjustable with relation to one another, are mutually adjustable with relation to the base-plate 6a; that is, the 'tongue 16a' is slidable alongl the groove 15a, and obviously, by thus adjusting` these members with relationto one another, the angularity of this pair of jaws or this bifurcated member 7a-8a is changed with relation to the major surfaces of the base-plate. A screw 17, similar to that previously mentioned, 'ahuts against the rib 16a for securingit in its different adjustments along the groove 15a.

Although l have described these embodiments of my invention very specically, it is not intended to limit this invention to these exact details of `construction and arrangement, but changes may be made within the scope of the inventive ideas as implied and claimed.

`What I claim as my invention is:

1. In a work-holding device for a chain conveyer, a chain-link, a basenplate seated on and united with the outer side of said chain-linka jaw mounted upon said baseplate and adjustable longitudinally vofthe same, means for releasably holding said jaw in an adjusted position, and a second jaw extending` in overhanging relation. to vthe rst jaw and having a work-engaging face extended. parallel to the work-engaging face of the first jaw.

2. In a work-holding device for a chainconveyer, a base-plate attachable to the outer side of a chain link, a jaw mounted on the outer side of ysaid base-plate and being adjustable longitudinally of the latter, means to hold said jaw in its different adjustments, and a second jaw adjustably mounted on said base-plate for adjustment toward and away from the first mentioned jaw and having a work-engaging surface extending parallel to the work-engaging surface of the first jaw and cooperative with the first mentioned jaw to hold a bar therebetween'.

3, In a work-holding device for a chainconveyer, a chain-link, a base-plate seated on and secured to the outer side of said link, said base-plate having a groove in and extending along its outer surface, a work-seat disposed obliquely to the outer surface of the base plate and provided with securing means including an element extending into and adustable along said groove, and a work-engaging jaw cooperative with said work-seat` to hold a baror other work in an with said chain-link and provided at one ing surface which is oblique to said onterl end with e Work-seat which is oblique to the side of thelnk and is cooperative with said l0 outer side of the link, said base plate hav- Work-seat to hold Work therebetween in a ing' a socket at its opposite end, a jaw having laterally inclined position.

e shank seated in Said socket and movable In testimony whereof I have hereunto set therein towards and from said Work-seat, my hand.

and means to hold said shank in its different adjustments, said jaw having a Work-engag- ERNEST K. VAN BUSKIRK. 

